Replacement Of Rom - Mitsubishi FREQROL-SFJ Maintenance Manual

2. Disengage connectors 1
3. Disengage all card locks
float the card.
4.
Disengage connectors 4
in this order.
To install a new card, perfo rm the re-
verse
steps.
5 .3

Replacement of ROM

ROMs should be handled in pair; ROM1 (16G) and ROM2 (17G).
Replace a pair of ROMs.
Procedure:
Remove the FR-SFJ front panel (remove 4 panel mounting
screws).
(2) Remove Llle ROMs.
To remove the ROMs, be sure to use a ROM remover and
To load, identify each ROM (see ROM No.) and check ori-
Example of ROM loading failure
ROM tilts and its pins are not put into the socket
securely.
0
to let
0
b o a r d